RU2549648C1 - Device for production of minerals from continental shelf - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: device comprises a delivery pipe for supply of minerals designed from top to bottom with a bell and a pipeline for coolant supply. The delivery pipe is designed as variable section pipe with formation of alternating cylindrical compartments with inlets and outlets, and the top parts of some compartments are arranged with inclination as cross-lying with reference to other compartments, and the lower parts of compartments are designed conical, interconnected with coolant supply pipelines. Outlets of compartments are located from inlet holes at the distance necessary for passing and maintaining of soil and ice bodies in a suspension provided that: L≥3·d_max, where L - is the distance between inlets and outlets of compartments, d_max - maximum diameter of soil and ice bodies.

EFFECT: improvement of efficiency of production of minerals from continental shelf.

1 dwg

Description

The device relates to the mining industry and is intended for the production of incoherent minerals from the bottom of the continental shelf.

A device is known for underwater development of incoherent rocks, including a dredger with a pressure pipe, the ends of which are located at the bottom of the reservoir, and a refrigeration unit for supplying refrigerant to the pressure pipe, additionally equipped with a storage container, enclosed in a spherical dome and equipped with a heating element across the width of the container where defrosting takes place ground ice bodies and soil subsidence in the storage container, as it is filled, the device is lifted along the transport cable to the surface pond. The pressure pipeline is located radially around the entire perimeter of the spherical dome (RU 74663 U1, IPC E21C 50/00 dated 02/06/2008, published July 10, 2008).

The disadvantage of this device is the cyclical process of excavation, which leads to a decrease in productivity.

The closest in technical essence and the achieved result is a device for mining from the bottom of the continental shelf, including a transportation pipe for supplying minerals and a pipeline for supplying refrigerant, while the transportation pipe for supplying minerals in the lower part is made with a bell, and the rest the part is placed in a hollow pipe and is aligned with it, while the pipeline for supplying refrigerant is made in the form of a screw pipe, with the possibility of extension. The screw can be made, for example, of polymer (RU 115410 U1, IPC E21C 50/00, dated 11/07/2011, published: 04/27/2012).

This invention has several disadvantages:

- the air gap between the walls of the outer and shipping pipes leads to corrosion;

- the formation of ice between the screw pipe and the walls of the transport pipeline can lead to a halt in the mining process;

- restriction on the depth of mining.

The objective of the technical solution is to simplify the extraction of minerals from the bottom of the continental shelf, to eliminate restrictions on the depth of mining of minerals, to increase productivity and reduce losses of minerals when rising to the surface, to minimize environmental pollution during operation of the device.

This is achieved by the fact that the device for mining from the bottom of the continental shelf, including a transportation pipe for supplying minerals, made down with a bell, and a pipeline for supplying refrigerant, a transportation pipe is made in the form of a variable cross-section, with the formation of alternating cylindrical compartments having input and outlet openings, the upper parts of one compartment being tilted as lying crosswise with respect to the other compartments, and the lower parts of the compartments are made conical They are interconnected with pipelines for supplying refrigerant, and the outlet openings of the compartments are located from the inlet openings at a distance necessary for the passage and maintenance of ice bodies in suspension, provided:

L≥3 · d _max ,

where: L is the distance between the inlet and outlet openings of the compartments,

d _max - the maximum diameter of soil ice bodies.

The implementation of the transport pipe in the form of a variable cross-section, with the formation of alternating cylindrical compartments having inlet and outlet openings, allows you to catch soil ice bodies that have lost negative hydraulic size and tend to sink again to the bottom of the face, thereby preventing the emergence of newly formed soil ice bodies passing through the pipeline onto surface of the water area.

The arrangement of the upper parts of some compartments at a slope lying crosswise relative to other compartments will allow them to be directed to subsequent overlying compartments, thus, the soil-ice body, thawed during the ascent, does not fall back into the underwater face, but settles in the nearest compartment for hypothermia and formation there is enough ice on it for further ascent. The lower parts of the conical compartments, interconnected with pipelines for supplying refrigerant, and at the same time equipped with a plug and nozzle, will allow the refrigerant to freeze the ice again on the ice-ice bodies, returning the negative hydraulic size, the ice-ice bodies will again begin to float to the surface of the water area transport pipe, or to the next receiving hopper, where ice will be frozen on them.

This technical solution will allow working at great depths without special expenses for raising energy and mineral losses, and fastening pipes for the supply of refrigerant will help to avoid turbidity of the waters of the waters that are not involved in the mining process when the refrigerant is fed into the underwater face.

The figure shows a General view of the device.

A device for extracting minerals from the bottom of the continental shelf consists of a transport pipe made in the form of cylindrical compartments 1, a bell 2, a pipeline for supplying refrigerant 3, the upper parts of the compartments 4, which are inclined lying crosswise, inlet openings 5 and outlet openings 6.

The proposed device operates as follows.

The mining structure, reaching the bottom of the socket 2, together with the pipelines for supplying refrigerant 3 mounted in it, covers the developed part of the surface of the placer. Meanwhile, a refrigerant is supplied through pipelines 3 to the underwater face, which converts the fine mineral particles into ice bodies with negative hydraulic coarseness. Under the action of the refrigerant, the soil-ice bodies rise upward, through the inlet 5 and outlet 6 openings of the compartments 1 of the transport pipe to the surface of the water area, gliding along the upper parts of the compartments 4, which are inclined lying crosswise. Under the influence of the refrigerant in compartments 1, ice bodies acquire negative hydraulic coarseness and continue to ascend to the surface of the water area, where they are collected for subsequent transportation or enrichment.

The technical result of the proposed utility model consists in the possibility of a continuous extraction process, reducing the cost of transporting minerals from the underwater face, eliminating restrictions on the depth of excavation, reducing losses when raising the mineral, minimizing environmental pollution during operation of the mining device.

Claims (1)

A device for mining from the bottom of the continental shelf, including a transportation pipe for supplying minerals, made down to the bell, and a pipeline for supplying refrigerant, characterized in that the transportation pipe is made of variable cross-section with the formation of alternating cylindrical compartments having inlet and outlet openings, moreover, the upper parts of one of the compartments are inclined as lying in relation to other compartments, and the lower parts of the compartments are conical, inter associated with the ducts for coolant supply, wherein the outlet openings of the compartments are arranged in the region of the inlet openings required for the passage and maintain gruntoledyanyh bodies in suspension, provided that:
L≥3 · d _max ,
where L is the distance between the inlet and outlet openings of the compartments,
d _max - the maximum diameter of soil ice bodies.